US4538231A - Circuit for electric power source - Google Patents

Circuit for electric power source Download PDF

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Publication number
US4538231A
US4538231A US06/379,745 US37974582A US4538231A US 4538231 A US4538231 A US 4538231A US 37974582 A US37974582 A US 37974582A US 4538231 A US4538231 A US 4538231A
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United States
Prior art keywords
voltage
output
interruption process
output voltage
micro
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Expired - Fee Related
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US06/379,745
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English (en)
Inventor
Shunichi Abe
Mitsuo Akiyama
Yoshihiko Kudo
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Konica Minolta Inc
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Konica Minolta Inc
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Assigned to KONISHIROKU PHOTO INDUSTRY CO. LTD, A CORP. OF JAPAN reassignment KONISHIROKU PHOTO INDUSTRY CO. LTD, A CORP. OF JAPAN ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: ABE, SHUNICHI, AKIYAMA, MITSUO, KUDO, YOSHIHIKO
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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5012—Priority interrupt; Job recovery, e.g. after jamming or malfunction
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of DC power input into DC power output
    • H02M3/02—Conversion of DC power input into DC power output without intermediate conversion into AC
    • H02M3/04—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters
    • H02M3/10—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • H02M3/156—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators
    • H02M3/157—Conversion of DC power input into DC power output without intermediate conversion into AC by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only with automatic control of output voltage or current, e.g. switching regulators with digital control

Definitions

  • the present invention relates to a circuit for electric power source which may be applied to an equipment such as a copier which has loads such as a clutch, solenoid, high voltage unit, D.C. motor and a micro-computer on board.
  • loads such as a clutch, solenoid, high voltage unit, D.C. motor and a micro-computer on board.
  • an electrophotographic copier a variety of devices are arranged so as to carry out a series of copying processes.
  • a paper feeding device to feed copy paper
  • a driving device to synchronously drive both a lamp-mirror of an optical scanning system and a photosensitive drum
  • a high voltage unit to supply a high voltage to the respective electrodes for charging, transferring and electrostatically separating operations, and the like.
  • mechanical parts such as a clutch, solenoid, D.C. motor, or an electric power source input section, and the input voltage of the order of several tens of volt must be applied in general in order to operate each.
  • a stable voltage such as a three-terminal regulator output or a switching regulator output
  • an electric power source full-wave rectified by a diode bridge, for example, after a voltage of 100V A.C. is stepped-down by a transformer, with all the faults such as expensive costs and instability.
  • the device in the case of using an unstabilized full-wave rectified power source, the device can be simplified and economized in cost. However, they have the following problems:
  • the faults in said stabilized power source and in the power source for a full-wave rectified wave have been overcome and an inexpensive cost has been attained, and further its stability is superior to power sources for full-wave rectified wave and it generates a sufficiently stabilized voltage output, so as to serve as a suitable power source for said clutch, solenoid, D.C. motor and high voltage unit.
  • the circuits for power sources according to the invention attain the aforesaid functions with the use in common of a micro-computer for controlling the operations of a copier or others and with only the addition thereto of a voltage detection circuit and a switching circuit, which are inexpensive in cost and also suitable for driving the mechanical parts of the copier.
  • FIG. 1 illustrates an example of a stabilized power source circuit that is intermittently controlled by a conventional technique
  • FIG. 2 is an example of a stabilized power source circuit constituted by utilizing a micro-computer of the invention
  • FIG. 3 is a brief flow-chart for a sequence control carried out with the micro-computer to be used for the power source circuit of the invention
  • FIG. 4 is a flow-chart of an interruption process routine for attaining the stabilized output voltage from the power source circuit of the invention constituted as shown in FIG. 2;
  • FIG. 5 is one of the examples of a power source circuit constituted by the invention.
  • FIG. 6-I and FIG. 6-II respectively illustrate the flow-chart for each of the interruption process routines 7.5 and 6.5 in the power source circuit exemplified in FIG. 5.
  • the section bounded by a dashed line is power supply section 20 controlled by a micro-computer for the system having CPU (Intel 8085) 21, I/O port 22 built therein with RAM and a timer, and PROM 23 that is a writable and erasable memory.
  • the micro-computer drives optical system forward travelling clutch CL 24, paper feeding D.C. motor M 25 and solenoid SOL 26 at the voltage of 24 V as to the load, respectively.
  • the collector of transistor 204 supplies the stabilized output of D.C. 24 V through the output stabilizing circuit comprising capacitor 207 to clutch CL 24, motor M 25 and solenoid SOL 26 to serve as the power sources thereof.
  • Said output of D.C. 24 V is divided through resistors 208, 209 and the voltage thus divided is inputted to PA 2 that is assigned to serve as the input port of I/O port (Intel 8155) 22.
  • the micro-computer is used for stabilizing the output from an electric power circuit, in parallel with the controls for the other sequence for copying operation. Therefore in the flow-chart of a copying sequence shown in FIG. 3 if the timer is set so as to generate pulses with the intervals of every 0.1 m sec. for example, a timer-out signal from I/O port (Intel 8155) 22 is inputted to the terminal RST 7.5 of CPU (Intel 8085) 21 so that interruptions with the intervals of every 0.1 m sec. can be effected.
  • the CPU (Intel 8085) 21 branches off in specific operands through the order given from RST 7.5 to effect the routine processes for interruptions which are stored in said specific operands.
  • the interruption process is so arranged as to read the input information to said PA 2 according to the flow-chart shown in FIG. 4 and to correspondingly control PC 2 .
  • the stabilized outputs at both ends of capacitor 207 are divided by resistors R 1 and R 2 respectively. And when the voltage thus divided coincides with the threshold level of I/O port (Intel 8155) 22 an interruption process is commenced.
  • an interruption process is commenced once, any other interruption is prohibited and the contents of every register are saved. Thereafter the address of CPU (Intel 8085) 21 is set and port PA 2 of I/O port (Intel 8155) 22 is designated, and the information of port PA 2 in the I/O port is inputted.
  • FIG. 5 illustrates the constitution of another circuit of the invention, in which the constitution of power supply section 50 bounded by the dashed line is different from that shown in FIG. 2.
  • the micro-computer section comprises CPU (Intel 8085) 51, I/O port (Intel 8155) 52 and PROM (Intel 2716) 53 and a drive circuit 57 for driving solenoids SOL 1, 54, SOL 2, 55, SOL 3, 56 to serve as the loads.
  • the constitution of the power supply section except the output means thereof is the same as that shown in FIG. 2.
  • V 1 by resistors R 1 508 and R 2 509 is inputted to the non-inversion input of comparator COMP 1, 514 and is also inputted to the inversion input of comparator COMP 2, 515.
  • the reference (i.e., control) voltages V 3 and V 4 of these comparators COMP 1 and COMP 2 are different from said stabilized output voltage V 1 , respectively.
  • said 5 V is divided by resistors R 2 , 510 and R 4 , 511 to make a voltage as to V 3 and is also divided by resistors R 5 , 512 and R 6 , 513 to make another voltage as to V 4 .
  • Resistance of resistors R 3 through R 6 are determined so as to make said V 3 and V 4 from the D.C. 5 V.
  • transistor 521 connected to the PC 2 is switched off and transistor 504 of power supply section 50 is operated to the switch-off side, so that the collector voltage of transistor 504 and in its turn stabilized output voltage V 1 are stepped down. Then, as V 1 is stepped down, V 2 is also stepped down.
  • V 2 is stepped down to satisfy the relative condition of V 2 ⁇ V 4 (3.99 V)
  • the output of comparator COMP 2 gives an H signal. Said H signal is converted into a positive pulse wave through the differentiating circuit comprising resistor R 7 , 516 and capacitor C, 517, and is then inputted to the terminal of RST 6.5 of the CPU.
  • the CPU carries out the interruption process of RST 6.5 and the program skips over to the operand 34 to carry out the interruption process routine 6.5 (the flow-chart thereof is shown in FIG. 6-II) stored therein and thus gives an H signal to PC 2 . Consequently, transistor 521 is switched on and the voltage of V 1 is stepped up.
  • V 1 the voltage of V 1 is repeated to step up and down.
  • V 3 and V 4 are set at 4.01 V and 3.99 V, respectively
  • V 2 fluctuates between 3.99 V and 4.01 V while V 1 is regulated between 23.94 V and 24.06 V according to the fluctuation of V 2 .
  • a micro-computer is used mainly for controlling the a sequence of a copier operation and at the same time an interruption process is also used efficiently.
  • a micro-computer is used mainly for controlling the a sequence of a copier operation and at the same time an interruption process is also used efficiently.

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  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Control Of Voltage And Current In General (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Dc-Dc Converters (AREA)
US06/379,745 1981-05-28 1982-05-19 Circuit for electric power source Expired - Fee Related US4538231A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP56082373A JPS57196267A (en) 1981-05-28 1981-05-28 Power supply circuit
JP56-82373 1981-05-28

Publications (1)

Publication Number Publication Date
US4538231A true US4538231A (en) 1985-08-27

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US (1) US4538231A (enrdf_load_stackoverflow)
JP (1) JPS57196267A (enrdf_load_stackoverflow)
DE (1) DE3220267A1 (enrdf_load_stackoverflow)

Cited By (31)

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US4639660A (en) * 1984-03-19 1987-01-27 Pioneer Electronic Corporation Switching circuit for a power supply in a signal processing apparatus
US4661765A (en) * 1984-06-18 1987-04-28 Ricoh Company, Ltd. Alternating current load power controller
WO1988001077A1 (en) * 1986-08-04 1988-02-11 Rockwell International Corporation Universal solid state power controller
US4785406A (en) * 1986-09-17 1988-11-15 Advanced Micro Devices, Inc. Quad exchange power controller
US4901243A (en) * 1987-06-16 1990-02-13 Sharp Kabushiki Kaisha Timer controlled power supply system for a data terminal
WO1990003680A1 (en) * 1988-09-30 1990-04-05 Electric Power Research Institute, Inc. Method and apparatus for controlling a power converter
US4954767A (en) * 1989-01-20 1990-09-04 Thomson-Csf Control device for switched power supply
US4980836A (en) * 1988-10-14 1990-12-25 Compaq Computer Corporation Apparatus for reducing computer system power consumption
US5006781A (en) * 1988-05-09 1991-04-09 Onan Corporation Microprocessor based integrated generator set controller apparatus and method
US5168208A (en) * 1988-05-09 1992-12-01 Onan Corporation Microprocessor based integrated generator set controller apparatus and method
US5426387A (en) * 1992-02-27 1995-06-20 Societeanonyme Dite: Labratoires D'hygiene Et De Dietetique Device for generating an electrical voltage of predetermined waveform, iontophoresis apparatus for transdermally administering medicinal products and electrical stimulation apparatus, which apparatuses are equipped with such a device
US5646513A (en) * 1995-03-10 1997-07-08 International Business Machines Corporation Dynamic loop compensator for continuous mode power converters
US5721485A (en) * 1996-01-04 1998-02-24 Ibm Corporation High performance on-chip voltage regulator designs
US5892959A (en) * 1990-06-01 1999-04-06 Vadem Computer activity monitor providing idle thread and other event sensitive clock and power control
US5978244A (en) * 1997-10-16 1999-11-02 Illinois Tool Works, Inc. Programmable logic control system for a HVDC power supply
US6144570A (en) * 1997-10-16 2000-11-07 Illinois Tool Works Inc. Control system for a HVDC power supply
US6351692B1 (en) 2000-10-24 2002-02-26 Kohler Co. Method and apparatus for configuring a genset controller for operation with particular gensets
US20020062454A1 (en) * 2000-09-27 2002-05-23 Amphus, Inc. Dynamic power and workload management for multi-server system
US6453217B1 (en) * 1999-01-29 2002-09-17 Mitsubishi Electric Semiconductor System Corporation Frequency switching method by microcomputer and frequency switching device
US6555929B1 (en) 2000-10-24 2003-04-29 Kohler Co. Method and apparatus for preventing excessive reaction to a load disturbance by a generator set
US20030196126A1 (en) * 2002-04-11 2003-10-16 Fung Henry T. System, method, and architecture for dynamic server power management and dynamic workload management for multi-server environment
US6700356B1 (en) 2000-10-24 2004-03-02 Kohler Co. Method and apparatus for regulating the excitation of an alternator of a genset
US6701221B1 (en) 2000-10-24 2004-03-02 Kohler Co. Method and apparatus for preventing excessive heat generation in a alternator of a generator set
US20040233602A1 (en) * 2003-02-28 2004-11-25 Eaton Zane C. Automatic transfer switch capable of receiving input power having voltage within a wide range
US20050136733A1 (en) * 2003-12-22 2005-06-23 Gorrell Brian E. Remote high voltage splitter block
US20050177755A1 (en) * 2000-09-27 2005-08-11 Amphus, Inc. Multi-server and multi-CPU power management system and method
US20060163633A1 (en) * 2004-09-01 2006-07-27 Cem Basceri Dielectric relaxation memory
US20060248360A1 (en) * 2001-05-18 2006-11-02 Fung Henry T Multi-server and multi-CPU power management system and method
US20070101173A1 (en) * 2000-09-27 2007-05-03 Fung Henry T Apparatus, architecture, and method for integrated modular server system providing dynamically power-managed and work-load managed network devices
US20070245165A1 (en) * 2000-09-27 2007-10-18 Amphus, Inc. System and method for activity or event based dynamic energy conserving server reconfiguration
USRE40866E1 (en) 2000-09-27 2009-08-04 Huron Ip Llc System, method, and architecture for dynamic server power management and dynamic workload management for multiserver environment

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US4569585A (en) * 1982-06-17 1986-02-11 Canon Kabushiki Kaisha Image forming apparatus
DE3742749A1 (de) * 1987-12-17 1989-07-06 Philips Patentverwaltung Fernmeldeendgeraet mit einem signalprozessor
GB9008898D0 (en) * 1990-04-20 1990-06-20 Ferguson Ltd Receiver for satellite reception
DE10061738A1 (de) * 2000-12-07 2002-06-20 Siemens Ag DC/DC-Wandler

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Cited By (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4639660A (en) * 1984-03-19 1987-01-27 Pioneer Electronic Corporation Switching circuit for a power supply in a signal processing apparatus
US4661765A (en) * 1984-06-18 1987-04-28 Ricoh Company, Ltd. Alternating current load power controller
WO1988001077A1 (en) * 1986-08-04 1988-02-11 Rockwell International Corporation Universal solid state power controller
US4740883A (en) * 1986-08-04 1988-04-26 Rockwell International Corporation Universal solid state power controller
GB2201851A (en) * 1986-08-04 1988-09-07 Rockwell International Corp Universal solid state power controller
GB2201851B (en) * 1986-08-04 1990-11-14 Rockwell International Corp Universal solid state power controller
US4785406A (en) * 1986-09-17 1988-11-15 Advanced Micro Devices, Inc. Quad exchange power controller
US4901243A (en) * 1987-06-16 1990-02-13 Sharp Kabushiki Kaisha Timer controlled power supply system for a data terminal
US5006781A (en) * 1988-05-09 1991-04-09 Onan Corporation Microprocessor based integrated generator set controller apparatus and method
US5390068A (en) * 1988-05-09 1995-02-14 Onan Corporation Microprocessor based integrated generator set controller apparatus and method
US5168208A (en) * 1988-05-09 1992-12-01 Onan Corporation Microprocessor based integrated generator set controller apparatus and method
WO1990003680A1 (en) * 1988-09-30 1990-04-05 Electric Power Research Institute, Inc. Method and apparatus for controlling a power converter
US4994981A (en) * 1988-09-30 1991-02-19 Electric Power Research Institute, Inc. Method and apparatus for controlling a power converter
USRE36189E (en) * 1988-10-14 1999-04-13 Compaq Computer Corporation Apparatus for reducing computer system power consumption
US4980836A (en) * 1988-10-14 1990-12-25 Compaq Computer Corporation Apparatus for reducing computer system power consumption
US4954767A (en) * 1989-01-20 1990-09-04 Thomson-Csf Control device for switched power supply
US7134011B2 (en) 1990-06-01 2006-11-07 Huron Ip Llc Apparatus, architecture, and method for integrated modular server system providing dynamically power-managed and work-load managed network devices
US7237129B2 (en) 1990-06-01 2007-06-26 Huron Ip Llc System and method for activity or event based dynamic energy conserving server reconfiguration
US5892959A (en) * 1990-06-01 1999-04-06 Vadem Computer activity monitor providing idle thread and other event sensitive clock and power control
US6584571B1 (en) 1990-06-01 2003-06-24 St. Clair Intellectual Property Consultants, Inc. System and method of computer operating mode clock control for power consumption reduction
US6079025A (en) * 1990-06-01 2000-06-20 Vadem System and method of computer operating mode control for power consumption reduction
US6859882B2 (en) 1990-06-01 2005-02-22 Amphus, Inc. System, method, and architecture for dynamic server power management and dynamic workload management for multi-server environment
US20020004913A1 (en) * 1990-06-01 2002-01-10 Amphus, Inc. Apparatus, architecture, and method for integrated modular server system providing dynamically power-managed and work-load managed network devices
US20020004915A1 (en) * 1990-06-01 2002-01-10 Amphus, Inc. System, method, architecture, and computer program product for dynamic power management in a computer system
US20020007464A1 (en) * 1990-06-01 2002-01-17 Amphus, Inc. Apparatus and method for modular dynamically power managed power supply and cooling system for computer systems, server applications, and other electronic devices
US20030200473A1 (en) * 1990-06-01 2003-10-23 Amphus, Inc. System and method for activity or event based dynamic energy conserving server reconfiguration
US20030188208A1 (en) * 1990-06-01 2003-10-02 Amphus, Inc. System, method, and architecture for dynamic server power management and dynamic workload management for multi-server environment
US5426387A (en) * 1992-02-27 1995-06-20 Societeanonyme Dite: Labratoires D'hygiene Et De Dietetique Device for generating an electrical voltage of predetermined waveform, iontophoresis apparatus for transdermally administering medicinal products and electrical stimulation apparatus, which apparatuses are equipped with such a device
US5646513A (en) * 1995-03-10 1997-07-08 International Business Machines Corporation Dynamic loop compensator for continuous mode power converters
US5721485A (en) * 1996-01-04 1998-02-24 Ibm Corporation High performance on-chip voltage regulator designs
US6144570A (en) * 1997-10-16 2000-11-07 Illinois Tool Works Inc. Control system for a HVDC power supply
US6562137B2 (en) 1997-10-16 2003-05-13 Illinois Tool Works Inc Power supply control system
US6423142B1 (en) 1997-10-16 2002-07-23 Illinois Tool Works Inc. Power supply control system
US5978244A (en) * 1997-10-16 1999-11-02 Illinois Tool Works, Inc. Programmable logic control system for a HVDC power supply
US6453217B1 (en) * 1999-01-29 2002-09-17 Mitsubishi Electric Semiconductor System Corporation Frequency switching method by microcomputer and frequency switching device
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US20050177755A1 (en) * 2000-09-27 2005-08-11 Amphus, Inc. Multi-server and multi-CPU power management system and method
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US20020062454A1 (en) * 2000-09-27 2002-05-23 Amphus, Inc. Dynamic power and workload management for multi-server system
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US20070245165A1 (en) * 2000-09-27 2007-10-18 Amphus, Inc. System and method for activity or event based dynamic energy conserving server reconfiguration
US6555929B1 (en) 2000-10-24 2003-04-29 Kohler Co. Method and apparatus for preventing excessive reaction to a load disturbance by a generator set
US6700356B1 (en) 2000-10-24 2004-03-02 Kohler Co. Method and apparatus for regulating the excitation of an alternator of a genset
US6351692B1 (en) 2000-10-24 2002-02-26 Kohler Co. Method and apparatus for configuring a genset controller for operation with particular gensets
US6701221B1 (en) 2000-10-24 2004-03-02 Kohler Co. Method and apparatus for preventing excessive heat generation in a alternator of a generator set
US7721125B2 (en) 2001-04-11 2010-05-18 Huron Ip, Llc System, method, and architecture for dynamic server power management and dynamic workload management for multi-server environment
US20060248360A1 (en) * 2001-05-18 2006-11-02 Fung Henry T Multi-server and multi-CPU power management system and method
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DE3220267C2 (enrdf_load_stackoverflow) 1991-03-28
DE3220267A1 (de) 1982-12-30
JPS57196267A (en) 1982-12-02

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